diff --git a/software/erp5testnode/testsuite/deploy-test/buildout.hash.cfg b/software/erp5testnode/testsuite/deploy-test/buildout.hash.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..037efcd8a175e2b74c246ed7eea95f1ef41014c7
--- /dev/null
+++ b/software/erp5testnode/testsuite/deploy-test/buildout.hash.cfg
@@ -0,0 +1,21 @@
+# THIS IS NOT A BUILDOUT FILE, despite purposedly using a compatible syntax.
+# The only allowed lines here are (regexes):
+# - "^#" comments, copied verbatim
+# - "^[" section beginings, copied verbatim
+# - lines containing an "=" sign which must fit in the following categorie.
+#   - "^\s*filename\s*=\s*path\s*$" where "path" is relative to this file
+#     Copied verbatim.
+#   - "^\s*hashtype\s*=.*" where "hashtype" is one of the values supported
+#     by the re-generation script.
+#     Re-generated.
+# - other lines are copied verbatim
+# Substitution (${...:...}), extension ([buildout] extends = ...) and
+# section inheritance (< = ...) are NOT supported (but you should really
+# not need these here).
+[deploy-script-controller-script]
+filename = deploy-script-controller
+md5sum = f0f5dd379361eb37f84e0bc7639f645f
+
+[template-deploy-test]
+filename = instance.cfg.in
+md5sum = 616abb7fb4608321e11ade0a43b0ce4b
diff --git a/software/erp5testnode/testsuite/deploy-test/software.cfg b/software/erp5testnode/testsuite/deploy-test/software.cfg
index d8919c0edde34ffc6fa39d0d8d80110e0329168b..5a76bb272dd398f587db3f1d00916e8e9e279b26 100644
--- a/software/erp5testnode/testsuite/deploy-test/software.cfg
+++ b/software/erp5testnode/testsuite/deploy-test/software.cfg
@@ -1,5 +1,7 @@
 [buildout]
-extends = https://lab.nexedi.com/nexedi/slapos/raw/1.0.112/software/kvm/software.cfg
+extends =
+  buildout.hash.cfg
+  https://lab.nexedi.com/nexedi/slapos/raw/1.0.112/software/kvm/software.cfg
 
 # PyPi servers from new host since some time and change is not incorporated in extended KVM SR
 allow-hosts +=
@@ -57,9 +59,7 @@ git-executable = ${git:location}/bin/git
 output = ${buildout:directory}/template-original.kvm.cfg
 
 [deploy-script-controller-script]
-filename = deploy-script-controller
 location = ${:_profile_base_location_}/${:filename}
-md5sum = f0f5dd379361eb37f84e0bc7639f645f
 # configuration
 waittime = 360
 tries = 80
@@ -70,9 +70,8 @@ location = ${:_profile_base_location_}/${:filename}
 
 [template-deploy-test]
 recipe = slapos.recipe.template
-url = ${:_profile_base_location_}/instance.cfg.in
+url = ${:_profile_base_location_}/${:filename}
 output = ${buildout:directory}/template.cfg
-md5sum = 616abb7fb4608321e11ade0a43b0ce4b
 mode = 0644
 
 [versions]